# A119743 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 6 5 3 6 1 7 15 8 45 9 15 10 1 11 28 12 210 13 420 14 105 15 1 16 45 17 630 18 3150 19 4725 20 945 21 1 22 66 23 1485 24 13860 25 51975 26 62370 27 10395 28 1 29 91 30 3003 31 45045 32 315315 33 945945 34 945945 35 135135 36 1 37 120 38 5460 39 120120 40 1351350 41 7567560 42 18918900 43 16216200 44 2027025 45 1 46 153 47 9180